Unions can be blue-collar.Logical formLearned from47 sentences. An union can be religious.Logical formLearned from47 sentences. An union may be involved.Logical formLearned from47 sentences. A future may pertain-to an union.Logical formLearned from47 sentences. An union may pertain-to employers.Logical formLearned from47 sentences. Unions may pertain-to some (oil workers).Logical formLearned from47 sentences. A president may pertain-to a (police union).Logical formLearned from47 sentences. An union may represent some teachers.Logical formLearned from47 sentences. An (union leader) may pertain-to a country.Logical formLearned from47 sentences. A rank may pertain-to an union.Logical formLearned from47 sentences. (Union sources) may say that something-is-the-case.Logical formLearned from46 sentences. Unions may play a role.Logical formLearned from46 sentences. An entry can be into an union.Logical formLearned from46 sentences. A us-state may be admitted to an union.Logical formLearned from46 sentences. Members may pertain-to unions.Logical formLearned from46 sentences.